<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script type="text/javascript" src="../js/vue.js"></script>
</head>
<body>
    <div id="app">
        <h2>人员列表</h2>
        <button @click.once="add">添加一个老刘</button>
        <ul>
            <li v-for="(p,index) in persons" :key="index">
                {{p.name}}-{{p.age}}-{{index}}
                <input type="text">
            </li>
            
        </ul>
    </div>
    <script>
        Vue.config.productionTip = false;
        var v = new Vue({
            el:'#app',
            data:{
                persons:[
                    {id:'001',name:"张三",age:18},
                    {id:'002',name:"李四",age:19},
                    {id:'003',name:"王五",age:20},
                    {id:'003',name:"王五",age:20}
                ]
            },
            methods:{
                add(){
                    const p = {id:"004",name:'老刘',age:40};
                    this.persons.unshift(p);
                }
            }
        })
    </script>
</body>
</html>